COPY command ignores folders with same name as grandparent directory

[gnur]

I was debugging a strange issue and fount out that folders are not copied in certain situations.

With the following file tree:

.
├── app
│   ├── alpha
│   │   ├── 1
│   │   ├── 2
│   │   └── 3
│   ├── beta
│   │   ├── 1
│   │   ├── 2
│   │   └── 3
│   └── src
│       ├── 1
│       ├── 2
│       └── 3

If this filetree is mounted in /src the directory app/src would not get copied with a COPY /src/app /dest.

Steps to reproduce:

#!/bin/bash
 
 for i in alpha beta src; do
     for j in 1 2 3; do
         mkdir -p app/$i
         touch app/$i/$j
     done
 done

cat <<EOT > Dockerfile
FROM busybox
WORKDIR /workspace
COPY app /workspace
RUN find /workspace
EOT 

 docker run \
     -v $(pwd):/src \
     gcr.io/kaniko-project/executor:latest \
 -f /src/Dockerfile -d test/test -c /src/

output:

shm /proc/bus /proc/fs /proc/irq /proc/sys /proc/sysrq-trigger /proc/kcore /proc/keys /proc/timer_list /proc/sched_debug /sys/firmware]"
time="2018-07-02T10:08:43Z" level=info msg="Unpacking layer: 0"
time="2018-07-02T10:08:44Z" level=info msg="Not adding /dev because it is whitelisted"
time="2018-07-02T10:08:44Z" level=info msg="Taking snapshot of full filesystem..."
time="2018-07-02T10:08:44Z" level=info msg="cmd: workdir"
time="2018-07-02T10:08:44Z" level=info msg="Changed working directory to /workspace"
time="2018-07-02T10:08:44Z" level=info msg="Taking snapshot of files [/workspace]..."
time="2018-07-02T10:08:44Z" level=info msg="cmd: copy [app]"
time="2018-07-02T10:08:44Z" level=info msg="dest: /workspace"
time="2018-07-02T10:08:44Z" level=info msg="Creating directory /workspace"
time="2018-07-02T10:08:44Z" level=info msg="Creating directory /workspace/alpha"
time="2018-07-02T10:08:44Z" level=info msg="Copying file /src/app/alpha/1 to /workspace/alpha/1"
time="2018-07-02T10:08:44Z" level=info msg="Copying file /src/app/alpha/2 to /workspace/alpha/2"
time="2018-07-02T10:08:44Z" level=info msg="Copying file /src/app/alpha/3 to /workspace/alpha/3"
time="2018-07-02T10:08:44Z" level=info msg="Creating directory /workspace/beta"
time="2018-07-02T10:08:44Z" level=info msg="Copying file /src/app/beta/1 to /workspace/beta/1"
time="2018-07-02T10:08:44Z" level=info msg="Copying file /src/app/beta/2 to /workspace/beta/2"
time="2018-07-02T10:08:44Z" level=info msg="Copying file /src/app/beta/3 to /workspace/beta/3"
time="2018-07-02T10:08:44Z" level=info msg="Taking snapshot of files [/workspace /workspace/alpha /workspace/alpha/1 /workspace/alpha/2 /workspace/alpha/3 /workspace/beta /workspace/beta/1 /workspace/beta/2 /workspace/beta/3]..."
time="2018-07-02T10:08:44Z" level=info msg="cmd: /bin/sh"
time="2018-07-02T10:08:44Z" level=info msg="args: [-c find /workspace]"
time="2018-07-02T10:08:44Z" level=info msg="Taking snapshot of full filesystem..."
/workspace
/workspace/beta
/workspace/beta/3
/workspace/beta/2
/workspace/beta/1
/workspace/alpha
/workspace/alpha/3
/workspace/alpha/2
/workspace/alpha/1
2018/07/02 10:08:44 No matching credentials found for index.docker.io, falling back on anonymous
time="2018-07-02T10:08:45Z" level=error msg="UNAUTHORIZED: \"authentication required\""

If you change src to alpha in the mount commands the same happens, except app/src does get copied and app/alpha no longer gets copied.

[priyawadhwa]

Hey @gnur , I just merged #231 which should fix this bug. Thanks for opening the issue, please reopen if you continue to get this error!